Backport IFD-related features to coreboot's ifdtool about me_cleaner HOT 5 OPEN

Also me_cleaner is integrated in the build process, I don't know if ifdtool should handle ME-specific flags.

With a modifed layout where the me region has been shrinked (the end of the region has moved to a lower address, even just by 4 kB), ifdtool -n newlayout image.rom corrupts the me region. The descriptor is fine, however it seems that the starting chunk of the me region has been cut off. me_cleaner doesn't have this problem as it doesn't move regions at all: -D generates a descriptor with a modified layout, while -M extracts the me region (and, if the -t flag has been passed, it just extracts the region up to end_addr).

from me_cleaner.

That is because ifdtool uses "right-align" scheme when moving region (seen from commit 4eabe1e, when feature new-layout was implemented), though such scheme is only valid for the BIOS region.

I am going to fix this.

from me_cleaner.

Makes sense. Thank you.

from me_cleaner.

Could you help me review this change? It may help to resolve the issue mentioned above.

from me_cleaner.

Of course. However I'm a bit busy these weeks, I'll try to review it ASAP.

from me_cleaner.